78121520

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{263}}^1$

素因数の和:402

約数の個数: 80

約数和(自身を含む): 188559360

約数和(自身を除く): 110437840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 79, 80, 94, 158, 188, 235, 263, 316, 376, 395, 470, 526, 632, 752, 790, 940, 1052, 1264, 1315, 1580, 1880, 2104, 2630, 3160, 3713, 3760, 4208, 5260, 6320, 7426, 10520, 12361, 14852, 18565, 20777, 21040, 24722, 29704, 37130, 41554, 49444, 59408, 61805, 74260, 83108, 98888, 103885, 123610, 148520, 166216, 197776, 207770, 247220, 297040, 332432, 415540, 494440, 831080, 976519, 988880, 1662160, 1953038, 3906076, 4882595, 7812152, 9765190, 15624304, 19530380, 39060760, 78121520]

約数ペア:

[(1, 78121520), (2, 39060760), (4, 19530380), (5, 15624304), (8, 9765190), (10, 7812152), (16, 4882595), (20, 3906076), (40, 1953038), (47, 1662160), (79, 988880), (80, 976519), (94, 831080), (158, 494440), (188, 415540), (235, 332432), (263, 297040), (316, 247220), (376, 207770), (395, 197776), (470, 166216), (526, 148520), (632, 123610), (752, 103885), (790, 98888), (940, 83108), (1052, 74260), (1264, 61805), (1315, 59408), (1580, 49444), (1880, 41554), (2104, 37130), (2630, 29704), (3160, 24722), (3713, 21040), (3760, 20777), (4208, 18565), (5260, 14852), (6320, 12361), (7426, 10520)]